See also:

Recommended Fluids and Lubricants
...

Introduction
The names, logos, emblems, slogans, vehicle model names, and vehicle body designs appearing in this manual including, but not limited to, GM, the GM logo, BUICK, the BUICK Emblem, and LACR ...

Power Lumbar
On vehicles equipped with either a two-way or four-way lumbar, the control is located on the outboard side of the seats. For a detailed operation description see Power Lumbar . ...